【Key words】 immune activity factor; dairy cow mastitis recessive; treatment;
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Conclusion: the method is simple and stable, whose product of the specific transfer factor of HBV met the quality standard with specific immune activity to HBV-antigen.
结论:用体外免疫法制备乙肝病毒特异性转移因子工艺稳定,制备的转移因子符合质量标准,具有对乙肝病毒抗原的特异性。
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